# -- coding: utf-8 --
# @Time : 2021/3/17--17:45
# @Author : ChinaV
# @File : Turtle 绘图题：同心套圈.py


import turtle

r = 10
dr = 50
head = 90
for i in range(4):
    turtle.pendown()
    turtle.circle(r)
    r += (dr)
    turtle.penup()
    turtle.seth(-head)
    turtle.fd(dr)
    turtle.seth(0)
turtle.done()
